CVE-2026-72812 — SiYuan before v3.7.4 Missing Authorization via refreshBacklink
SiYuan versions before v3.7.4 contain a missing authorization vulnerability in the /api/ref/refreshBacklink endpoint that allows anonymous readers to trigger persistent server-s…
Published: 2026-08-14 · CVSS: 6.9 · CVSS 4.0
SiYuan versions before v3.7.4 contain a missing authorization vulnerability in the /api/ref/refreshBacklink endpoint that allows anonymous readers to trigger persistent server-side writes. Attackers can invoke the endpoint with an attacker-controlled block ID to flush transaction queues, scan all references globally, and enqueue database writes, bypassing read-only protections and enabling resource amplification attacks.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7